Does anybody out there have any tabs on Western Vacation - solo, verse, chorus, anything?

It really is my favourite Vai solo. My poor old Jamvox has worn several mp3's down to the 0's and 1's trying to work out the incredible 5 second riff that starts at about 5:00 min into the song (although that might change depending on what version you listen to).

Any help would be really great, that song has been a source of wonder and mystery to me for over 20 years,